Lamp stand



C. W DAKE LAMP STAND Aug. 9; 1932.

Filed Nov. 13, 1950 2 Sheets-Sheet l ATTORNEKJ.

Aug. 9, 1932. w, DAKE 1,870,609

LAMP STAND Filed Nov. 15, 1530 2 Sheets-Sheet 2 137 -3 3 lllll-llll-li QJI IN VEN TOR.

ATToRNEw Patented Aug. 9, 1932 PATENT @FFECE GHARLES V]. BAKE, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE PYLE-NATIO'NAL COM-j.

IPANY, OF CHICAGO, ILLINOIS, A GORFOBAIION OF NEW JERSEY LAMP STAND Application filed November 13, 1930. Serial No. 495,341,

My invention relates to improvements in lamp stands and especially relates to a stand and focusing device for use in connection with locomotive headlights. Experience has shown that lamp filaments on locomotive headlights are exceedingly sensitive to vibration and many failures result. It is desirable to cushion the lamp therefore. There is no point to cushioning the housing or the reflector because of the great weight involved and because of the relative rigidity and durability of the parts and l have provided therefore a cushioning device which permits the necessary range of focusing adjustment and which is compact and durable.

My invention is illustrated more or less diagrammatically in the accompanying drawings, wherein- Figure l is a vertical section through a part of the housing and reflector showing the light and supporting parts in elevation;

Figure 2 is a rear end elevation of the lamp support;

Figure 3 is a perspective detail of a part of the bracket;

Figure 4 is a perspective detail of the cushion.

Like parts are indicated by like characters throughout the specification and drawings.

A is a supporting base. Mounted on it by means not here shown is a searchlight housing A This housing contains a reflector A apertured at A the housing being apertured at A in line with the aperture A The reflector is mounted at its mouth in the housing and the housing is supported at its forward end on the base A by any suitable mechanism not here shown since it forms no part of the present invention.

B is a bracket bolted to the base A. This bracket contains a stud B there being a lug in the bracket to engage the keyway B in the stud B so that the stud may move vertically with respect to the bracket but is held against rotation with respect thereto. A lug 13 projects from the bracket and has threaded in it the thumb screw 13* which thumb screw engages the gate B pivoted on one side of the bracket. the bracket being cut away to permit the gate to engage the stud B to lock the stud against longitudinal movement. The stud B is threaded at B at its upper end, carries a supporting pad B and is associated with an adjusting nut 13 which nut is supported by the bracket. This nut may be rotated to raise or lower the stud and-the thumb screw B may be operated to lock the stud against displacement, the adjusting nut being operative for displacement of the stud only when the thumb screw is released. This provides a vertical adjustment of the electric light bulb. Mounted on the pad B are two flexible cushion blocks C of rubber or suitable shock absorbing resilient material. Screws C 0 hold these two blocks on the pad B the two blocks being arranged with their axes generally parallel with the axis of the reflector. Screws C C associated with each of the cush- .ion blocks tie them to ears C on the split also in threaded engagement with an ear D on the split socket G. Then the thumb screw C is released the screw D may be rotated by the thumb piece D to move the electric light holder longitudinally. Since the adjusting screw D has two threads a very fine adjustment is provided and danger of jarring loose is minimized. These two adjustments are all that are needed to bring the light into proper focus, that is the light must be moved up vertically into the plane of the axis of the reflector and must then be moved longitudinally along theaxis of'the reflector for focusing. There is no need of a lateral adjustment because that can be taken care of by the original manufacture of the device.

The two flexible cushion pads providing as they do, two rather widely separated cushion supports with the pads tying the two parts together furnish an adequate flexible base for the electric light and cushion the blows resulting from the irregularities of the track, vibration of the engine and the like. At the same time since the pads are permanently anchored between the supporting base and the split socket, there is no tendency toward escapeand no opportunitygfor' the parts to get out of working adjustment. 7 The relative position of the plate B be- 'neaththe socket'and theconneCtionbetween this plate and=the ea-rs-* G and G -at oints out of line with the supporting lug 1 and screw B makes it possible for the flexible support to be interposed, between thesocket: and

the lamp bracket without increasing the overialliheight oftheibracket V-support and lamp, therebymaking it possiblefforathe adjustable :snpportiand; the-socket toibeused interchange- :ably. imalamp bnacket with" sockets of the 'uncnshioned type so=that theqcushion feature :may be' :addedi to ilanipsoalready in existence without change -:whatever in lamp bracket, reflector or} housing.

:Lclaim:

J. ;A support f for'eleotric; light holders in combination, a bracket, axstud longitudinally -.-adjustable inrsaitl bracketgmeansiforilocking :saidstuil in:adjustediposition,rasplit-sooket, a lamp; holder supported in said socket'and longitudinally movable itherein, means for longitudinally adj ustings said holder in said socket, means :for docking said holder in nadjnstediposition, and cushioningmeans interposed between said-stud andsocket,said:cush

inning meansabeing'fastenedi to saidi stud 'by certain ifiastening bolts and to said socket :by' other fastening bolts eanilaconstitutingtthe soleconneotion of saidsocket to saidstud.

:12. A-suppo'rt for. a: locomotive headlight. includin g in combination, a.bracket,ha studllon- .igitudinally adj ustable': in said bracket,r a pad ncarried by said stud, 2a splitssocket, :a'lamp holder carried by. said: socket r-an'd ilongitudially-adjustable therein, cushioning means in- 5 terposed between said pad :and said socket,

*fastening :means securing said cushioning means to said pad, other f fasteningmeans securing saidicushioningzmeansito said-socket, said cushioning and ifasteningsmeans consti- :tuting tthe :sole connection idf said socket to saidzpadmnd-providing 'a resilient connection therebetween, :iafthrea'ded zlug forming: a part of said-socket,:a ithiteadedlug on said holder,

5 theithreadsof.saidflugsYbeing differentand: a screw :having two threaded portions one of which engages the lug=onthe ho1der andthe other of which engages the lug i on the socket .for adjusting said'holder linsaid socket.

6a Signed at Chicago, :county of Cook and State of Illinois, this 10th dayof November,

CHAR-LES "DAKE. 

